JPH0587925U - Coil insulation for instrument transformers - Google Patents
Coil insulation for instrument transformersInfo
- Publication number
- JPH0587925U JPH0587925U JP3558492U JP3558492U JPH0587925U JP H0587925 U JPH0587925 U JP H0587925U JP 3558492 U JP3558492 U JP 3558492U JP 3558492 U JP3558492 U JP 3558492U JP H0587925 U JPH0587925 U JP H0587925U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- insulating layer
- woven fabric
- outer periphery
- wound around
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Insulating Of Coils (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
(57)【要約】
【構成】フィルム状の堅い材質の不織布を巻装した第１
の絶縁層と、第１の絶縁層の外周に絶縁電線を巻装した
コイルと、コイルの外周に綿状の柔らかい材質の不織布
を巻装した第２絶縁層とを順次巻装してモ−ルド形計器
用変圧器のコイル絶縁を行うようにしている。
【効果】コイルの段間およびコイル周囲に不織布からな
る絶縁層が一様に分布しているので、含浸した樹脂のた
まりがなくなりクラックやキレツも発生することなく機
械的特性および電気的特性を向上することが出来る。
(57) [Summary] [Structure] A film-like non-woven fabric made of non-woven material
The insulating layer, the coil in which the insulated wire is wound around the outer periphery of the first insulating layer, and the second insulating layer in which the non-woven fabric made of a cotton-like soft material is wound around the outer periphery of the coil. It is designed to insulate the coil of the voltage gauge type transformer. [Effect] Since the insulating layer made of non-woven fabric is evenly distributed between the coil steps and around the coil, the impregnated resin does not accumulate and cracks and crevices do not occur, improving mechanical and electrical characteristics. You can do it.
Description
【０００１】[0001]
本案は，モールド形計器用変圧器に関し、特に一次コイルの絶縁構造の改良に 関する。 The present invention relates to a molded instrument transformer, and particularly to improvement of the insulation structure of the primary coil.
【０００２】[0002]
モールド形計器用変圧器は、二次コイルを内側に配置し一次コイルを外側に配 置し、これらに絶縁樹脂を含浸させて構成している。従来の一次コイルの絶縁は 、図２に示すようにコイル１の段間に不織布２を設け、絶縁樹脂で含浸した構造 となっている。 The molded instrument transformer is constructed by arranging the secondary coil inside and the primary coil outside and impregnating them with insulating resin. The insulation of the conventional primary coil has a structure in which a nonwoven fabric 2 is provided between the steps of the coil 1 and impregnated with an insulating resin as shown in FIG.
【０００３】[0003]
しかし、不織布とコイルを交互に巻いていった場合、コイルの外側に不織布の 無い空気層３が存在し、絶縁樹脂を含浸したとき空気層３の部分は絶縁樹脂が充 填し、絶縁樹脂のたまりが存在する。このため不織布がない部分は機械的特性が 劣り、クラックやキレツが生じ部分放電の発生の原因となり、寿命も短くなると いう欠点があった。 本案は、コイル端部にも層が均一に分布し、樹脂のたまりが発生しない電気的 および機械的に優れた一次コイルの絶縁を提供することを目的とする。 However, when the non-woven fabric and the coil are wound alternately, the air layer 3 without the non-woven fabric exists outside the coil, and when impregnated with the insulating resin, the portion of the air layer 3 is filled with the insulating resin and the insulating resin There is a pool. For this reason, there are disadvantages that the mechanical properties are inferior in the part where there is no non-woven fabric, cracks and crevices occur, which causes partial discharge, and shortens the life. It is an object of the present invention to provide an electrically and mechanically excellent primary coil insulation in which a layer is evenly distributed even at a coil end and resin accumulation does not occur.
【０００４】[0004]
フィルム状の堅い材質の不織布を巻装した第１の絶縁層と、第１の絶縁層の外 周に絶縁電線を巻装したコイルと、コイルの外周に綿状の柔らかい材質の不織布 を巻装した第２絶縁層とを設け、これらに絶縁樹脂を含浸するようにしている。 A first insulating layer wound with a film-like non-woven fabric, a coil wound with an insulated wire around the first insulating layer, and a cotton-like non-woven fabric wound around the coil. The second insulating layer is provided, and these are impregnated with an insulating resin.
【０００５】[0005]
これによりコイルが絶縁層の中に沈みこむこともなく規則正しく巻くことがで き、コイル両端にも絶縁層が密着し空気層が発生しなくなる。 As a result, the coil can be wound regularly without sinking into the insulating layer, and the insulating layer adheres to both ends of the coil and no air layer is generated.
【０００６】[0006]
以下、本案を図１に示す実施例に基づいて説明する。 図１は一次コイルの絶縁を示しており、 フィルム状の堅い材質の不織布、例えば日本バイリ−ン（株）のポリエステル不 織布Ｈ−８０１０密度０．４８ｇ／ｃｍ3 を筒状に巻装した第１の絶縁層４を構 成する。この第１の絶縁層の外周に絶縁電線を巻装し、この第１の絶縁層中に沈 みこむこともなく一様に規則正しく配列されてコイル５が形成できる。このコイ ルの外周に綿状の柔らかい材質の不織布、例えば倉敷繊維加工（株）のポリエス テル不織布ＥＴ６０密度０．１７ｇ／ｃｍ3 を巻装し、絶縁電線の外周に密着し て絶縁電線あるいは第１の絶縁層との間に空気層が発生することなく第２の絶縁 層６を構成する。このようにして第１の絶縁層と絶縁電線と第２の絶縁層とを順 次巻装して一次コイルを形成し、これを金型にセットして絶縁樹脂を含浸硬化さ せて構成するものである。The present invention will be described below based on the embodiment shown in FIG. FIG. 1 shows the insulation of the primary coil. A non-woven fabric made of a film-like rigid material, for example, a polyester nonwoven fabric H-8010 density of 0.48 g / cm 3 manufactured by Nippon Vilene Co. The first insulating layer 4 is formed. Insulated wires are wound around the outer periphery of the first insulating layer, and the coils 5 can be formed in a regular array without sinking into the first insulating layer. The outer circumference of this coil is wrapped with a cotton-like soft non-woven fabric, for example, polyester non-woven fabric ET60 density 0.17 g / cm 3 of Kurashiki Textile Co., Ltd. The second insulating layer 6 is formed without generating an air layer between the first insulating layer and the first insulating layer. In this way, the first insulating layer, the insulated wire and the second insulating layer are sequentially wound to form a primary coil, which is set in a mold and impregnated and cured with an insulating resin. It is a thing.
【０００７】[0007]
以上述べたように、本発明によれば、コイルの段間・端部など、コイル周囲に 不織布が一様に分布しているため、含浸時の樹脂のたまりがなくなり、クラック ・キレツも生じにくく、部分放電の発生も抑えることができ、機械的・電気的特 性の優れた一次コイルを得ることができる。 As described above, according to the present invention, since the non-woven fabric is uniformly distributed around the coil, such as between the steps and ends of the coil, the resin does not accumulate during impregnation and cracks and crevices are less likely to occur. Moreover, the occurrence of partial discharge can be suppressed, and a primary coil having excellent mechanical and electrical characteristics can be obtained.
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案の計器用変圧器のコイル部の断面図FIG. 1 is a sectional view of a coil portion of an instrument transformer of the present invention.
【図２】従来例の計器用変圧器のコイル部の断面図FIG. 2 is a cross-sectional view of a coil portion of a conventional instrument transformer.
１ コイル ２ 不織布 ３ 空気層 ４ 第１の絶縁層 ５ コイル ６ 第２の絶縁層 1 coil 2 non-woven fabric 3 air layer 4 first insulating layer 5 coil 6 second insulating layer
Claims (1)
樹脂でコイル全体を含浸したモ−ルド形計器用変圧器に
おいて、フィルム状の堅い材質の不織布を巻装した第１
の絶縁層と、第１の絶縁層の外周に絶縁電線を巻装した
コイルと、コイルの外周に綿状の柔らかい材質の不織布
を巻装した第２絶縁層とを具えたことを特徴とするモ−
ルド形計器用変圧器。1. In a transformer for a mold type instrument in which a non-woven fabric is sandwiched between steps of a primary coil and the entire coil is impregnated with an insulating resin, a non-woven fabric made of a film-like hard material is wound.
The insulating layer, a coil in which an insulated wire is wound around the outer periphery of the first insulating layer, and a second insulating layer in which a nonwoven fabric made of a cotton-like soft material is wound around the outer periphery of the coil. Mode
Ludder type voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992035584U JP2574232Y2 (en) | 1992-04-28 | 1992-04-28 | Transformers for molded instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992035584U JP2574232Y2 (en) | 1992-04-28 | 1992-04-28 | Transformers for molded instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0587925U true JPH0587925U (en) | 1993-11-26 |
| JP2574232Y2 JP2574232Y2 (en) | 1998-06-11 |
Family
ID=12445826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992035584U Expired - Lifetime JP2574232Y2 (en) | 1992-04-28 | 1992-04-28 | Transformers for molded instruments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574232Y2 (en) |
-
1992
- 1992-04-28 JP JP1992035584U patent/JP2574232Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2574232Y2 (en) | 1998-06-11 |
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